Neck fan



FIG. 1 is a perspective view of a neck fan showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a right side perspective view thereof; and,

FIG. 9 is an enlarged view thereof taken from the circle part in FIG. 2.

The broken lines encircling portions of the neck fan in FIG. 2 and FIG.9 form no part of the claimed design.

CLAIM The ornamental design for a neck fan, as shown and described.